Don Rhummy's questions

I have a key ~/.ssh/id_rsa and I added the pub key to my authorized keys:

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

I also changed my permissions to 600:

sudo chmod 600 ~/.ssh/authorized_keys

I checked and /etc/ssh/sshd_config is set for public key auth and has password auth as no.

PubkeyAuthentication yes
PasswordAuthentication no

I tried adding:

ssh-keyscan -t rsa localhost > /etc/ssh/ssh_known_hosts

I copied my id:

ssh-copy-id [email protected]

I restarted the service:

sudo service sshd restart

But despite all that, it still asks for a password! How can i make it not ask for one?

More Info:

When I do ssh localhost it asks for a password, but when I do myusername@localhost it works! Why is this?

I've got a server with centOS that has no graphical interface. I only connect to it via ssh. As a result, the GPU is probably not used for much. I'd like to make the server use it as an extra CPU core. Is this possible? How would I do this?

I installed VC_redist.x86.exe as instructed by the Apache docs, but when I run httpd.exe -k install it gives me the error:

this program can't start because vcruntime140.dll is missing
from your computer. Try reinstalling the program to fix this problem. 

Installing VC_redist.x64.exe also did not fix the issue.

Why would it be missing? Do I need to restart after installing "VC_redist.x86.exe"? Is there something else?

I have an apache server set up on CentOS. I am trying to add SSL. I was able to create the certificate and keys and then updated /etc/httpd/conf.d/ssl.conf to have the following configurations:

/etc/httpd/conf.d/ssl.conf

#Where I put my cert
SSLCertificateFile /etc/pki/tls/certs/ca.crt

#where I put my key
SSLCertificateKeyFile /etc/pki/tls/private/ca.key

Then I updated /etc/httpd/conf/httpd.conf:

/etc/httpd/conf/httpd.conf

Listen 443
SSLEngine on
SSLCertificateFile /etc/pki/tls/certs/ca.crt
SSLCertificateKeyFile /etc/pki/tls/private/ca.key

Then I ran service httpd restart and I get the error:

Stopping httpd:          [OK]
Starting httpd:          (98)Address already in use: make_sock: could not bind to address [::]:443
                         [OK]

What do I need to do to enable SSL?

I have run into a number of problems getting sendmail to work. None of the solutions I've tried have worked.

First: sendmail was hanging for 60 seconds and then not sending the email.

To solve this, I used suggestions from the web to set my /etc/hostname to a fully qualified domain name (FQDN) and then put that in /etc/hosts as well. This did get rid of the hanging, but I still never receieve any emails sent from sendmail.

Second: Installed postfix

This did not fix the issue. Sending an email via sendmail or mail at the command line both fail. Example:

echo "a message" | sendmail [email protected]
echo "a message" | mail [email protected]

Both commands return instantly without error, but no email is ever recieved at the gmail account.

I made sure a port was open at 25 in the router as well (although this shouldn't be an issue as Thunderbird can send emails behind the router).

I need to get this working for PHP but cannot figure out where in the many steps from the program to the remote email server it is failing. How would I figure this out?

Just like the title asks, what can I do to protect against infection by the Apache Linux/Cdorked.A backdoor?

I'm getting the message: "500 5.3.3 Unrecognized command" from Exchange server and seeing in the Exchange Server logs that it's tarpitting my smtp sender despite the fact that:

1. I added a Receive Connector for my ip that allows connection, uses "Externally Secure"

2. I ran the commands (with the actual server name):

CODE:

Set-ReceiveConnector "MyTrusted connector (Servername)" -MaxAcknowledgementDelay 0

Set-ReceiveConnector "MyTrusted connector (Servername)" -TarpitInterval 0                     

Despite all that, it STILL fails! Any idea what's wrong?

I set my Exchange server to trust my IP address as specified here: https://serverfault.com/a/207583/101328 (Allows my ip, no authentication, set to "Externally Secure")

However, it still does not work! The following occurs:

Server: 220 server.mydomain.com Microsoft ESMTP MAIL Service ready at Thu, 1 Dec 2011 19:26:23 -0500

//This actually has my ip address, not x's
MyClient: HELO [xxx.xxx.xxx.xxx]

And then my client just hangs forever. Any idea what's wrong and what I can do to fix this?

I'm connecting to the exchange server on port 25.

I have a Microsoft Exchange server for a small business and we just upgraded to 2010. It's now prompting people on Android with:

Activate device administrator?

 - Erase all data: Perform a factory reset, deleting all of your data without any confirmation 
 - Limit Password: Restrict the types of passwords you are allowed to use. 
 - Watch login attempts: Monitor failed attempts to login to the device, to perform some action 
 - Force Lock: Control when device locks, requiring you re-enter its password.

We don't want this. Is there a way in Exchange to turn this off?